EP 2642078 A2 20130925 - System and method for recirculating a hot gas flowing through a gas turbine
Title (en)
System and method for recirculating a hot gas flowing through a gas turbine
Title (de)
System und Verfahren zur Rückführung eines durch eine Gasturbine strömenden Heißgases
Title (fr)
Système et procédé pour recirculer un gaz chaud s'écoulant à travers une turbine à gaz
Publication
Application
Priority
US 201213424414 A 20120320
Abstract (en)
A system for recirculating a hot gas (20) flowing through a gas turbine generally includes a transition piece (32) having a downstream surface (42), a stationary nozzle (52) having a leading edge surface (60) adjacent to the transition piece downstream surface (42), a gap (68) defined between the transition piece downstream surface (42) and the stationary nozzle leading edge surface (60), and a projection (72) having an inner arcuate surface (74) radially separated from an outer surface (82). The projection (72) generally extends from the stationary nozzle leading edge surface (60) towards the transition piece downstream surface (42) and at least partially decreases the gap (68). A seal (50) extends across the gap (68) and may be in contact with the transition piece (32) and the stationary nozzle leading edge surface (60). A recirculation zone (80) may be at least partially defined between the projection inner arcuate surface (74), the stationary nozzle leading edge surface (60) and the transition piece downstream surface (42).
IPC 8 full level
F01D 9/02 (2006.01)
CPC (source: EP RU US)
F01D 9/023 (2013.01 - EP US); F01D 1/00 (2013.01 - RU); F16J 15/40 (2013.01 - RU); F23R 2900/00012 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 2642078 A2 20130925; EP 2642078 A3 20131211; EP 2642078 B1 20160120; CN 103321688 A 20130925; CN 103321688 B 20160302; JP 2013194734 A 20130930; JP 6200170 B2 20170920; RU 2013112113 A 20140927; RU 2610373 C2 20170209; US 2013247580 A1 20130926; US 9243508 B2 20160126
DOCDB simple family (application)
EP 13159328 A 20130315; CN 201310090340 A 20130320; JP 2013050202 A 20130313; RU 2013112113 A 20130319; US 201213424414 A 20120320